Security :: Iptables :everything Works Except Ftp

Jun 3, 2010

i set up a dmz to have a internet web server and ftp server, and ssh only from local network, so i wrote a iptables script to load during boot :

[Code]...

The problem is that everything works fine ( i have the same rules for other services such as samba, nfs, mysql on another server) BUT ftp there is no way to make it work. not even locally.when i try to connect, i log in, but while listing the directory i get MLSD ... and it hangs like this for a moment, then i get error message "connection time out" , "impossible to list directory". if i turn off the iptables script no problem,ftp works fine.. but why all services work and ftp no?

how do i have to modify the rules? what is strange also is that if i set as OUTPUT policy "accept", the server seems to be offline."host unknown" error message. I was thinking the rule INPUT is fine cause at least i can login, but the dir list is not going out, so gotta modify output rules. or state?

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General :: NFS Client & Stopping Iptables Also Works

May 16, 2011

Client is running Oracle VM Server 2.2.1 (kernel 2.6.18-128.2.1.4.37.el5xen). Storage is a NetApp 3210 (NFS configured to use TCP). Iptables on client has udp and tcp ports 111, 2049 and the NFS server ports opened. Info retrieved using: rpcinfo -p NetApp When trying a manual mount.

[Code]....

stopping iptables also works (I can manually mount the share without using proto=tcp). Is the mounting process somehow trying to negotiate first using udp which the Netapp doesn't respond and hence it fails by timing out? Can I configure iptables such that I don't have to use the proto=tcp option? Or is there another configuration file I can tweak so that I don't have to use the proto=tcp option?

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Networking :: NFS Client - Mount Only Works With Proto=tcp While Iptables Is Running

May 17, 2011

Client is running Oracle VM Server 2.2.1 (kernel 2.6.18-128.2.1.4.37.el5xen). Storage is a NetApp 3210 (NFS configured to use TCP).

Iptables on client has udp and tcp ports 111, 2049 and the NFS server ports opened. Info retrieved using: rpcinfo -p NetApp

When trying a manual mount ...

But when using the proto=tcp option, it works ...

Stopping iptables also works (I can manually mount the share without using proto=tcp).

Is the mounting process somehow trying to negotiate first using udp which the Netapp doesn't respond and hence it fails by timing out?

Can I configure iptables such that I don't have to use the proto=tcp option? Or is there another configuration file I can tweak so that I don't have to use the proto=tcp option?

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[code]....

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Feb 1, 2009

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[Code]....

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Dec 14, 2009

Im pulling my hair out trying to get ftp to work through iptables.Im using vsftpd

Table: filter
Chain INPUT (policy DROP)
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1 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
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[code].....

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Quote:
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[Code]....

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Is this how I would do that?

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i ran this

Code:

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Code:

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Now I managed to get iptables to work with my OpenVZ configurations and everything seems to work as it should. However when I run iptables -L I can only see source for the second SSH rule, why isn't the first ones source/IP shown? Also if you have any comments about the setup feel free. I'm running SSH, Apache and local MySQL

The xxx.xxx is simply to hide my IP's
Code:
iptables -P INPUT ACCEPT
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iptables -P FORWARD DROP

iptables -F
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iptables -F OUTPUT
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i have a problem with iptables when i use nmap to scan ports then ports shown.this is my rules on my firewall.Quote:

*filter
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[Code]...

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